Search the Insulator Patent Reference Library

Search the Insulator Patent Reference Library:

SELECT DISTINCT patent.*, YEAR(date) as year FROM patent LEFT JOIN category ON category.patent = patent.patent AND category.type = patent.type WHERE (category.class = '65') AND (category.subclass = '309') ORDER BY date ASC, patent, type

Total of 8 patents found where: Class is '65'; Subclass is '309';

View a patent by clicking on the patent number. You can sort by any of the columns by clicking on the column name.

T / S	Patent	Date	Description	Patentee	Category	Assigned To
		1900
U	646,949	April 10, 1900	Press for Molding Insulators or Similar Articles Automatic press for making insulators	BROOKFIELD, Henry M.	Press
		1906
U	820,477	May 15, 1906	Apparatus for Manufacturing Glass Articles Press for making glassware	CROSKEY, John H.	Press	Duquesne Glass Co.
		1907
U	849,461	April 9, 1907	Glass Press Glass press	CONWAY, Thomas J.	Press
U	859,306	July 9, 1907	Glass Molding Machine Glass press that can be adapted for insulator manufacture	LUCOCK, John S.	Press
		1909
U	937,137	October 19, 1909	Machine for Producing Glass Insulators Press for making glass insulators	ZURN, Charles M.	Press
		1915
U	1,136,275	April 20, 1915	Press for Making Glass Insulators Press for making glass insulators	ROEHRICH, Frank N.	Press	Brookfield Glass Co.
		1936
U	2,052,343	August 25, 1936	Plastic Forming Apparatus Insulator press	DU BOIS, David Irvin	Press	Whitall Tatum Co.
		1968
U	3,416,909	December 17, 1968	Apparatus for Molding Glass Articles Glass press that can be adapted for insulator manufacture	WILCOCK, John Edward	Press	Pilkington Brothers Ltd.

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